Analysis of Perovskite Solar Cell Degradation over Time Using NIR Spectroscopy—A Novel Approach

Marek Gąsiorowski, Shyantan Dasgupta, Leszek Bychto, Taimoor Ahmad, Piotr Szymak, Konrad Wojciechowski and Aleksy Patryn
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Marek Gąsiorowski: Faculty of Electronics and Computer Science, Koszalin University of Technology, 75-453 Koszalin, Poland
Shyantan Dasgupta: Faculty of Materials Engineering and Technical Physics, Poznan University of Technology, Piotrowo 3, 60-965 Poznan, Poland
Leszek Bychto: Faculty of Electronics and Computer Science, Koszalin University of Technology, 75-453 Koszalin, Poland
Taimoor Ahmad: Department of Physical Science and Engineering, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia
Piotr Szymak: Faculty of Mechanical and Electrical Engineering, Polish Naval Academy, 81-127 Gdynia, Poland
Konrad Wojciechowski: Saule Research Institute, Wroclaw Technology Park, 54-130 Wroclaw, Poland
Aleksy Patryn: Faculty of Electronics and Computer Science, Koszalin University of Technology, 75-453 Koszalin, Poland

Energies, 2022, vol. 15, issue 15, 1-11

Abstract: In recent years, there has been a dynamic development of photovoltaic materials based on perovskite structures. Solar cells based on perovskite materials are characterised by a relatively high price/performance ratio. Achieving stability at elevated temperatures has remained one of the greatest challenges in the perovskite solar cell research community. However, significant progress in this field has been made by utilising different compositional engineering routes for the fabrication of perovskite semiconductors such as triple cation-based perovskite structures. In this work, a new approach for the rapid analysis of the changes occurring in time in perovskite structures was developed. We implemented a quick and inexpensive method of estimating the ageing of perovskite structures based on an express diagnosis of light reflection in the near-infrared region. The possibility of using optical reflectance in the NIR range (900–1700 nm) to observe the ageing of perovskite structures over time was investigated, and changes in optical reflectance spectra of original perovskite solar cell structures during one month after PSC production were monitored. The ratio of characteristic pikes in the reflection spectra was determined, and statistical analysis by the two-dimensional correlation spectroscopy (2D-COS) method was performed. This method allowed correctly detecting critical points in thermal ageing over time.

Keywords: perovskite solar cell degradation; NIR Spectroscopy; optical reflectance; express-measurement method; the two-dimensional correlation spectroscopy (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
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